CVE catalog

CVE-2026-10275

Severity: High · CVSS 7CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: Jun 1, 2026, 4:45:14 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.30% · Oct 25, 2026

A flaw has been found in OpenSC up to 0.26.1. This affects the function test_kpgen_certwrite of the file src/tools/pkcs11-tool.c of the component pkcs11-tool Key Generation Module. This manipulation causes buffer overflow. The attack is possible to be carried out remotely. The complexity of an attack is rather high. It is indicated that the exploitability is difficult. The exploit has been published and may be used. Patch name: 814f745b3b6d100295f65f1935edd33d520d33ab. It is recommended to apply a patch to fix this issue.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	opensc	sid	`0.27.1-3`	fixed
Debian	opensc	forky	`0.27.1-3`	fixed
Debian	opensc	trixie	`0.26.1-2`	vulnerable
Debian	opensc	bookworm	`0.23.0-0.3+deb12u2`	vulnerable
Cpe	opensc	Not reported	Not reported	vulnerable
Opensuse	opensc	leap 16.0	`0.26.1-160000.5.1`	fixed
Suse	opensc	linux micro 6.1	`0.24.0-slfo.1.1_4.1`	fixed
Suse	opensc	linux micro 6.0	`0.24.0-6.1`	fixed
Opensuse	opensc	tumbleweed	`0.27.1-2.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	opensc	source	sid	`0.27.1-2`	not yet assigned	Not reported	[1139246]
Debian	opensc	source	forky	`0.27.1-2`	not yet assigned	Not reported	[1139246]
Debian	opensc	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1139246]
Debian	opensc	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1139246]
Opensuse	opensc	rpm	leap 16.0	`0.26.1-160000.5.1`	Not reported	OPENSUSE-SU-2026:21873-1	Not reported
Suse	opensc	rpm	linux micro 6.1	`0.24.0-slfo.1.1_4.1`	Not reported	SUSE-SU-2026:22139-1	Not reported
Suse	opensc	rpm	linux micro 6.0	`0.24.0-6.1`	Not reported	SUSE-SU-2026:22103-1	Not reported
Opensuse	opensc	rpm	tumbleweed	`0.27.1-2.1`	Not reported	OPENSUSE-SU-2026:11022-1	Not reported

[Debian bug #1139246]

Notes

[trixie] opensc: Minor issue [bookworm] opensc: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[opensc]Affected
Details (2)
- 0.23.0-0.3+deb12u2 · amd64 · bookworm
  Affected
  nvd · opensc · debian · bookworm; nvd · opensc · debian · 12
- 0.23.0-0.3+deb12u2 · arm64 · bookworm
  Affected
  nvd · opensc · debian · bookworm; nvd · opensc · debian · 12
[opensc-pkcs11]Affected
Source package: [opensc]
Details (2)
- 0.23.0-0.3+deb12u2 · amd64 · bookworm
  Affected
  nvd · opensc · debian · bookworm; nvd · opensc · debian · 12
- 0.23.0-0.3+deb12u2 · arm64 · bookworm
  Affected
  nvd · opensc · debian · bookworm; nvd · opensc · debian · 12

[Debian 13 (Trixie)]

[opensc]Affected
Details (2)
- 0.26.1-2 · amd64 · trixie
  Affected
  nvd · opensc · debian · 13
- 0.26.1-2 · arm64 · trixie
  Affected
  nvd · opensc · debian · 13
[opensc-pkcs11]Affected
Source package: [opensc]
Details (2)
- 0.26.1-2 · amd64 · trixie
  Affected
  nvd · opensc · debian · 13
- 0.26.1-2 · arm64 · trixie
  Affected
  nvd · opensc · debian · 13

[openSUSE Tumbleweed]

[opensc-bash-completion]Unknown
Source package: [opensc]
Details (1)
- 0.27.1-2.3 · noarch · tumbleweed
  Unknown · Fixed: 0.27.1-2.1
  Version impact unknown
  nvd · opensc · opensuse · tumbleweed
[opensc]Fixed
Source package: [opensc]
Details (1)
- 0.27.1-2.3 · x86_64 · tumbleweed
  Fixed · Fixed: 0.27.1-2.1
  nvd · opensc · opensuse · tumbleweed

Observed: Oct 23, 2026, 9:49:27 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]